2007 E64 M6

[Benji]

Gutted 🤦‍♂️ Old BMWs...

Fingers crossed you find the culprit

 

[Katanator]

Oem bearings still look good and crank is pristine. Thank God.

Need to decide on bearings, keep old ones, new oem, kings race, acl imported?

 

[Katanator]

Still to do:

Open tappet covers, just to check, rather have to deal with a leaky tappet cover than a bottom end inspection again.

I shall be replacing engin and trans mounts along with front control arms and bushes.

Inspect and open up main oil and vanos oil pump.

I will replace the vanos internal high pressure line.

 

[Katanator]

Something interesting, someone else was in here and the vanos pump is secondhand.

 

[Katanator]

Opened up the vanos pump, bearing race was deformed to the point that it would not turn freely without extreme resistance. These new pumps are not cheap 30-35k.

 

[PsyCLown]

Opened up the vanos pump, bearing race was deformed to the point that it would not turn freely without extreme resistance. These new pumps are not cheap 30-35k.

Ouch, part of S85 ownership I guess.

I see you get rebuild kits: https://drvanos.com/products/s85-vanos-pump-rebuild-kit

Even with shipping & customs it would likely work out cheaper than a new pump.

 

[Benji]

Glad you found the root cause of the problem...and well spotted as well!

S85 ownership in all its glory

 

[Peter@AEW]

Ouch, part of S85 ownership I guess.

I see you get rebuild kits: https://drvanos.com/products/s85-vanos-pump-rebuild-kit

Even with shipping & customs it would likely work out cheaper than a new pump.

You can do that kit if your wish is for it to fail again.
Once the race is deformed the pump extensions also deform and when you re assemble you have a new race and deformed extensions.
Rinse repeat

 

[Katanator]

Soooo glad I opened up. The metal debris was embedded in the main oil pump.

 

[Katanator]

More pics.

 

[Katanator]

You can do that kit if your wish is for it to fail again.
Once the race is deformed the pump extensions also deform and when you re assemble you have a new race and deformed extensions.
Rinse repeat

I have ordered the kit from DrVanos. Shall fit it and see how it turns.

My reasoning is it will an all cases be significantly better than what it was.

I will definitely order a new main oil pump from dealers.

 

[Katanator]

Bearing race fitted. The difference can not be described. Previously could not even turn 1/10 of a rev without significant resistance. Smooth as butter now.

The old bearing race had an oval shape from wear.

The kit comes with new o rings for all the pressure valves.